Question Hanging 15kg Projector

Discussion in 'Home Cinema Building DIY' started by NM20, Nov 8, 2018.

  1. NM20

    NM20
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    I want to hang a 15kg JVC x7500 from my ceiling.

    It is a plasterboard ceiling with no access above. I have bought a Peerless mount and am thinking of putting in some GripIT plugs. Will this work?

    If not what should I do?
     
  2. adam-burnley

    adam-burnley
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    Find a joist (or two) if you can
     
  3. NM20

    NM20
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    Would using one joist be sufficient? I think I can find one to put the back two screws into.
     
  4. adam-burnley

    adam-burnley
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    Possibly, although it might be better if you could fit a piece of ply or mdf across two joists and fix the mount to that
     
    Last edited: Nov 8, 2018
  5. NM20

    NM20
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    Okay, I have found the joists. Measured a piece of plywood, cut and and painted it black.

    Once the paint dries I will put about 5 screws in each end and then place the mount at the back end, into the joist again. Alternatively I could put the mount dead centre, but after going through the ply I would be into plasterboard again.

    Which would be best?
     
  6. John7

    John7
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    Use half inch ply and drop bolts through from above to hold the mount. Use nylock nuts on the bolts. Secure the assembled mount/ply to the ceiling with 75mm no.10 screws, x 3 or 4 to each joist.

    With a projector this weight, you might also consider a steel wire safety tether between projector and a joint fixing.
     
  7. NM20

    NM20
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    I can’t get above the ceiling, everything needs to be done from the room up.

    I can get the 75mm screws to attach the ply to the joists. The mount has come with two 75mm wood screws to attach it to the joists.

    Maybe I could do away with the ply and just use these into the one joist?
     
  8. John7

    John7
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    Hmmm... I think you really should spread the load over 2 x joists.

    If you bolt the mount to the ply using countersunk set screws (ceiling side), you can then offer up the assembly to the ceiling an fix through the ply to both joists using 3 x wood screws per joist
     
    Last edited: Nov 9, 2018
  9. NM20

    NM20
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    So attaching the ply to the two joists and then screw the mount into the middle? Or one of the joists?

    Thanks for the help..
     
  10. John7

    John7
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    What’s the span between the joists?
     
  11. NM20

    NM20
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    60cm
     
  12. Ronski

    Ronski
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    No, fix the mount to the ply, then screw the ply with the mount attached to the two joists.
     
  13. NM20

    NM20
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    Thanks.

    Would you place the mount equal distance between the joists on the ply? Or would you place the mount at one of the ends of the ply so that the screws for the mount can go into the joists too?
     
  14. NM20

    NM20
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    I just got what you mean.

    You would attach the mount to the ply using some bolts possibly and then hang the ply?
     
  15. stevelup

    stevelup
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    Just use wood screws to secure the bracket to the ply. 15kg is nothing.

    Personally, in this scenario I wouldn't have bothered with the wood. Two good solid fixings through the bracket into the joist, the remaining two fixings on toggle bolts.
     
  16. NM20

    NM20
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    Cheers pal.

    In the end I just took the two long wood screws that came with the Peerless Mount and went into the joists. It has been fine. The only issue was that that the screws for the mount had large heads and were a pain to get in as they kept catching on the body of the mount.

    Anyway we are three weeks in and it is still attached to the ceiling!
     

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